BackendTest: do not use withTransaction when it should not have any effect
BackendTest: do not use withTransaction when it should not have any effect

Ignore-this: c969dbdb88944c5033a7579cda571531

darcs-hash:20090824033244-e018d-275f8c4b7c15606eb6846ab0a30e883f6c980df2.gz

anton-dessiatov/dbmigrations,jakubfijalkowski/dbmigrations,nick0x01/dbmigrations,nathankot/dbmigrations,creswick/dbmigrations